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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+** the names of its contributors may be used to endorse or promote
+** products derived from this software without specific prior written
+** permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+#include <QtNetwork>
+
+#include "sender.h"
+
+Sender::Sender(QWidget *parent)
+ : QDialog(parent)
+{
+ groupAddress = QHostAddress("239.255.43.21");
+
+ statusLabel = new QLabel(tr("Ready to multicast datagrams to group %1 on port 45454").arg(groupAddress.toString()));
+
+ ttlLabel = new QLabel(tr("TTL for multicast datagrams:"));
+ ttlSpinBox = new QSpinBox;
+ ttlSpinBox->setRange(0, 255);
+
+ QHBoxLayout *ttlLayout = new QHBoxLayout;
+ ttlLayout->addWidget(ttlLabel);
+ ttlLayout->addWidget(ttlSpinBox);
+
+ startButton = new QPushButton(tr("&Start"));
+ quitButton = new QPushButton(tr("&Quit"));
+
+ buttonBox = new QDialogButtonBox;
+ buttonBox->addButton(startButton, QDialogButtonBox::ActionRole);
+ buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
+
+ timer = new QTimer(this);
+ udpSocket = new QUdpSocket(this);
+ messageNo = 1;
+
+ connect(ttlSpinBox, SIGNAL(valueChanged(int)), this, SLOT(ttlChanged(int)));
+ connect(startButton, SIGNAL(clicked()), this, SLOT(startSending()));
+ connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
+ connect(timer, SIGNAL(timeout()), this, SLOT(sendDatagram()));
+
+ QVBoxLayout *mainLayout = new QVBoxLayout;
+ mainLayout->addWidget(statusLabel);
+ mainLayout->addLayout(ttlLayout);
+ mainLayout->addWidget(buttonBox);
+ setLayout(mainLayout);
+
+ setWindowTitle(tr("Multicast Sender"));
+ ttlSpinBox->setValue(1);
+}
+
+void Sender::ttlChanged(int newTtl)
+{
+ udpSocket->setSocketOption(QAbstractSocket::MulticastTtlOption, newTtl);
+}
+
+void Sender::startSending()
+{
+ startButton->setEnabled(false);
+ timer->start(1000);
+}
+
+void Sender::sendDatagram()
+{
+ statusLabel->setText(tr("Now sending datagram %1").arg(messageNo));
+ QByteArray datagram = "Multicast message " + QByteArray::number(messageNo);
+ udpSocket->writeDatagram(datagram.data(), datagram.size(),
+ groupAddress, 45454);
+ ++messageNo;
+}